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. 1991 May;96(1):280–284. doi: 10.1104/pp.96.1.280

Cloning and Inactivation of a Gene Essential to Inorganic Carbon Transport of Synechocystis PCC6803 1

Teruo Ogawa 1
PMCID: PMC1080746  PMID: 16668165

Abstract

A clone (HP-1) which transforms the high CO2-requiring mutant (RKb) of Synechocystis PCC6803 defective in inorganic carbon transport to the wild-type (WT) phenotype was isolated from a WT genomic library. The clone contained a 5.4 kilobase-pair DNA insert. Complementation tests with subclones derived from HP-1 allowed the mutation in RKb to be located within 141 base-pair nucleotides. Sequencing of nucleotides in this region revealed an open reading frame encoding a hydrophobic protein consists of 80 amino acids. A defined mutant (M9) constructed by inactivating this putative inorganic carbon transport gene, designated ictA, was unable to transport CO2 and HCO3 into the intracellular inorganic carbon pool. Cloning and sequence analysis of the respective RKb gene revealed a base substitution which generates a stop codon in the middle of ictA.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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